Surface and ultrastructural characterization of raw and pretreated switchgrass

Bioresource Technology
Bryon S DonohoeRyan E Warner

Abstract

The US Department of Energy-funded Biomass Refining CAFI (Consortium for Applied Fundamentals and Innovation) project has developed leading pretreatment technologies for application to switchgrass and has evaluated their effectiveness in recovering sugars from the coupled operations of pretreatment and enzymatic hydrolysis. Key chemical and physical characteristics have been determined for pretreated switchgrass samples. Several analytical microscopy approaches utilizing instruments in the Biomass Surface Characterization Laboratory (BSCL) at the National Renewable Energy Laboratory (NREL) have been applied to untreated and CAFI-pretreated switchgrass samples. The results of this work have shown that each of the CAFI pretreatment approaches on switchgrass result in different structural impacts at the plant tissue, cellular, and cell wall levels. Some of these structural changes can be related to changes in chemical composition upon pretreatment. There are also apparently different structural mechanisms that are responsible for achieving the highest enzymatic hydrolysis sugar yields.

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Citations

Nov 29, 2015·Bioresource Technology·Keikhosro Karimi, Mohammad J Taherzadeh
Aug 23, 2011·Bioresource Technology·Gautam SarathHan Chen
Oct 30, 2014·Frontiers in Plant Science·Ye XiaSeth DeBolt
Feb 23, 2020·Frontiers in Plant Science·Kwang Ho KimJack Saddler
Feb 7, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Rafaela I S Ladeira ÁzarDaehwan Kim
Jan 2, 2021·International Journal of Biological Macromolecules· AlokikaBijender Singh

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